Re: lockdep warning with LTP dio test (v2.6.24-rc6-125-g5356f66)

2008-01-25 Thread Chris Mason
On Friday 25 January 2008, Jan Kara wrote: > > If ext3's DIO code only touches transactions in get_block, then it can > > violate data=ordered rules. Basically the transaction that allocates > > the blocks might commit before the DIO code gets around to writing them. > > > > A crash in the wrong

Re: lockdep warning with LTP dio test (v2.6.24-rc6-125-g5356f66)

2008-01-25 Thread Jan Kara
On Mon 14-01-08 13:14:54, Chris Mason wrote: > On Mon, 14 Jan 2008 18:06:09 +0100 > Jan Kara <[EMAIL PROTECTED]> wrote: > > On Wed 02-01-08 12:42:19, Zach Brown wrote: > > > Erez Zadok wrote: > > > > Setting: ltp-full-20071031, dio01 test on ext3 with Linus's > > > > latest tree. Kernel w/ SMP, pre

Re: lockdep warning with LTP dio test (v2.6.24-rc6-125-g5356f66)

2008-01-14 Thread Chris Mason
On Mon, 14 Jan 2008 18:06:09 +0100 Jan Kara <[EMAIL PROTECTED]> wrote: > On Wed 02-01-08 12:42:19, Zach Brown wrote: > > Erez Zadok wrote: > > > Setting: ltp-full-20071031, dio01 test on ext3 with Linus's > > > latest tree. Kernel w/ SMP, preemption, and lockdep configured. > > > > This is a real

Re: lockdep warning with LTP dio test (v2.6.24-rc6-125-g5356f66)

2008-01-14 Thread Jan Kara
On Wed 02-01-08 12:42:19, Zach Brown wrote: > Erez Zadok wrote: > > Setting: ltp-full-20071031, dio01 test on ext3 with Linus's latest tree. > > Kernel w/ SMP, preemption, and lockdep configured. > > This is a real lock ordering problem. Thanks for reporting it. > > The updating of atime inside

Re: lockdep warning with LTP dio test (v2.6.24-rc6-125-g5356f66)

2008-01-02 Thread Zach Brown
Erez Zadok wrote: > Setting: ltp-full-20071031, dio01 test on ext3 with Linus's latest tree. > Kernel w/ SMP, preemption, and lockdep configured. This is a real lock ordering problem. Thanks for reporting it. The updating of atime inside sys_mmap() orders the mmap_sem in the vfs outside of the j